Before I subscribed to Vonage, I had great internet connectivity. I installed the Motorola Voip router inline with my Linksys router and Cable modem and everything goes SPAZ! Could it be that my Linksys router has DHCP enabled and it's fighting with the new Vonage router?

Vonage support acts like they don't have a clue and just tells me to get rid of the LinkSys router, however, it's brand new (besides Vonage told me before I signed up that all the equipment that I had would be fine.) Throwing out the Linksys router is NOT an option.

Does anyone agree that if I simply disable the DHCP on the Linksys router, it will just become a big (over-priced) HUB and allow the Vonage router to work correctly?

How exactly is your network set up? In what order do you have the equipment (I assume the Vonage router is first since you talked about disabling the DHCP on the Linksys) and what models are your equipment? How many computers are you running on your network as well and finally what do you mean exactly by going "Spaz?" A few more details could help tremendously with the quality of the answers you receive.

Your DHCP solution could very well do the trick. Have you tried it? But depending on the model and capabilities of your Linksys, it might be better to use that device first and simply use the motorola as a Voip device rather than the router for your network.